CalcBoard: Multi Calculator
Side-by-Side Calculations
Free · In‑App Purchases · Designed for iPad
Initial release — multi-panel calculator with basic, scientific, programmer modes and unit converter.
CalcBoard is a calculator with no ads, no subscriptions, and no tracking. Compare prices side by side, run multiple calculations at once, and get precise results — without a single pop-up interrupting your math.
NO ADS. NO SUBSCRIPTIONS. EVER.
CalcBoard will never interrupt your calculations with pop-ups, banners, or full-screen ads. Premium features are available through a single one-time purchase — no monthly charges, no recurring fees.
COMPARE PRICES SIDE BY SIDE
Shopping for the best deal? Open two calculators on the same screen and compare unit prices, discounts, or totals without switching back and forth. CalcBoard is the fastest way to figure out which option actually saves you money.
MULTIPLE CALCULATORS, ONE SCREEN
Run up to eight independent calculator panels simultaneously. Compare prices, check homework, run different scenarios, or calculate tips for a split bill — all without losing your place.
SEE YOUR WORK
Every expression stays visible as you type — no more guessing what you entered. Scroll back through your full calculation history, search past results, bookmark important ones, and export when you need to.
FOUR POWERFUL MODES
• Basic — Clean, fast arithmetic for everyday math
• Scientific — Trig, logs, exponents, and advanced functions
• Programmer — Hex, binary, octal, and decimal with bitwise operations
• Unit Converter — Length, weight, temperature, currency, and 10+ categories
SHARED VALUE TRAY
Push any result to the shared value tray and pull it into another panel. Chain calculations across panels without retyping numbers.
INSTANT ACCESS FROM CONTROL CENTER (iOS)
Add CalcBoard to your iPhone's Control Center and launch it in a single tap from any screen — no hunting through your home screen. Open Settings → Control Center to add the CalcBoard control.
PRECISE RESULTS
CalcBoard uses arbitrary-precision decimal arithmetic. No floating-point rounding errors. 0.1 + 0.2 = 0.3, exactly.
YOUR DATA STAYS ON YOUR DEVICE
No ad SDKs, no analytics trackers, no unnecessary permissions. Your calculations are stored locally and never leave your device.
DESIGNED FOR EVERYONE
• Full VoiceOver and TalkBack accessibility
• Dynamic text scaling up to 200%
• Light and dark themes with 8 color options and 6 button styles
• Large touch targets and haptic feedback on every button
FREE TO START, PAY ONCE TO UNLOCK
Two calculator panels and basic mode are free, forever. One purchase unlocks everything — scientific mode, programmer mode, full unit converter, extra panels, shared value tray, unlimited history, themes, and more. No subscriptions. No recurring charges.
CalcBoard uses Apple's Terms of Use (EULA), which may be found here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
The developer, Colby Clark, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Colby Clark
- Size
- 52.2 MB
- Category
- Utilities
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- CalcBoard Premium $2.99
- Copyright
- © Solutionflare